Tier 1 Support: You are told it's something else or some applicable variant of "You're holding it wrong." If you are lucky, they will give you a replacement.
Tier 2 Support: You are told that they will talk to Engineering and get back to you. Expect a prompt response because they aren't really going to talk with Engineering -- tier 2 support doesn't even have their contact info. When they do get back to you, you are told Engineering said it's something else or some applicable variant of "You're holding it wrong." If you are lucky, they will give you a replacement.
Tier 3 Support: This only applies to iPhones, iPads, computers, and other high volume/profit product lines. There is no tier 3 support for the Apple TV.
Kidding aside, thanks for pursuing this. Unfortunately, it seems as if Apple doesn't have a system where they can look up a specific problem and see what the solution is (unless that is reserved for tier 3 support). Every time one of us submits a ticket, it is as if they have never heard of the problem and have to reinvent the wheel. I am sure there are Apple support techs that are familiar with this problem and its status. We are simply too well insulated from such people. Lack of transparency is one of the things I like least about Apple.